Count bacterial colonies accurately and quickly with this colony counter. Adjustable dish holder centers round dishes up to 100 mm, and square culture plates up to 100 mm x… [Read more] 100 mm. Darkfield illumination ensures even, glare-free viewing. Light is spread uniformly over the entire culture plate or dish. Colonies are bright and easily distinguished. Adjustable magnification lens rotates a full 360 degrees. Tilt leg for ergonomic use. Optional 1.5X auxiliary lens fits over standard lens to magnify to 3X. 110V. 1-year warranty.